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Functions and Graphs

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Question 63
f(x)=5x+2x−4x≥6 f(x) = \frac{5x+2}{x-4} \quad x \geq 6 f(x)=x−45x+2​x≥6
a.

Find ff(6)ff(6)ff(6)

[2]
b.

State the range of fff.

[1]
c.

Find f−1(x)f^{-1}(x)f−1(x) and state its domain

[3]
Markscheme

Functions and Graphs Questions

  1. A Level
  2. /Maths
  3. /Functions and Graphs

471 exam-style questions on Edexcel A Level Maths Functions and Graphs, covering 2.1 The Modulus Function, 2.2 Functions and Mappings, 2.3 Composite Functions, 2.4 Inverse Functions, 2.5 y=|f(x)| and y=f(|x|), 2.6 Combining Transformations, and 2.7 Solving Modulus Problems. Each one has a worked solution and a mark scheme showing where the marks go.

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